Oral surgery. This includes: reduction of a dislocation or fracture of the jaw or facial bone; excision of a benign or malignant tumor of the jaw; and orthognathic surgery that is needed to correct a significant functional impairment that cannot be adequately corrected with orthodontic services. This also includes PCP/plan approved benefits for the removal of impacted teeth that are fully or partially imbedded in the bone, removal of seven or more teeth (includes wisdom teeth) and gingivectomies involving two or gum quadrants.